Here is the full list of all 24 Legend of Keepers: Career of a Dungeon Manager achievements.
Kill 3 heroes with a single attack.
Complete level 20 of Ascension Mode with any Master.
Complete level 15 of Ascension Mode with any Master.
Reach 156 weeks in Endless Mode.
Unlock 45 Artefacts at the Archivist.
Complete level 10 of Ascension Mode with any Master.
Complete level 5 of Ascension Mode with any Master.
Steal 10 Artefacts from the Collector.
Recruit 5 rare monsters with the Headhunter.
Complete all missions with the Enchantress.
Unlock 35 Artefacts at the Archivist.
Complete all missions with the Engineer.
Summon 10 monsters in front of the Ninth Door.
Complete all missions with the Slaveholder.
Apply 20 stacks of "Bleeding" to a single hero.
Kill 3 heroes simultaneously with a trap.
Use only the same type of monsters during a dungeon.
Unlock 25 Artefacts at the Archivist.
Finish a game without seeing the Therapist.
Upgrade a monster to max level.
Gather 5 Artefacts during a game.
Kill a Champion.
Make 3 heroes flee.
Reach 260 weeks in Endless Mode.